1. Assistant Professor, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA 99164-2910.
2. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Washington State Univ., Pullman, WA 99164-2910.
3. Professor, Dept. of Civil Engineering, Texas A&M Univ., College Station, TX 77843-3135.